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Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, when the server receives an op_crypt_key_callback packet without prior authentication, the port_server_crypt_callback handler is not initialized, resulting in a null pointer dereference and server crash. An unauthenticated attacker who knows only the server's IP and port can exploit this to crash the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

PUBLISHED Reserved 2026-02-25 | Published 2026-04-17 | Updated 2026-04-17 | Assigner GitHub_M




HIGH: 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Problem types

CWE-476: NULL Pointer Dereference

Product status

>= 3.0.0, < 3.0.14
affected

>= 4.0.0, < 4.0.7
affected

>= 5.0.0, < 5.0.4
affected

References

github.com/...rebird/security/advisories/GHSA-xrcw-wpjx-pr95 exploit

github.com/...rebird/security/advisories/GHSA-xrcw-wpjx-pr95

github.com/FirebirdSQL/firebird/releases/tag/v3.0.14

github.com/FirebirdSQL/firebird/releases/tag/v4.0.7

github.com/FirebirdSQL/firebird/releases/tag/v5.0.4

cve.org (CVE-2026-28224)

nvd.nist.gov (CVE-2026-28224)

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